Improvement in bench-planes



C. L; ADANCOURT. BENCH-PLANE.

No'. 192.402. y Patented June 26.1877;

CLINTONL. ADANCUBT,Il OF LANSINGBURG, NEW YORK.

IMPROVEMENT IN BENCH-PLANES.

Specitication formingpart of Letters Patent No. 192,402, dated Jnne 26,1877 application filed f December 15, 1876.

To all whom it may concern:

Be it known that I, GLINTONL. ADAN- COURT, of the town of Lansingburg,Rens selaer county and State of New York, have invented an Improvementin Bench-Planes, of which the following is a specification The nature ofmy invention consists in forming a wood-plane in adjustable sections,which may be attached to its ends, so as to increase the length of itsbearing-surface when required, to vary the uses to be performed by it,and thus make one planeanswer a double use by lengthening the same.

It also consists in the manner of attaching` and operating the cuttingbit or knife to the plane, so that the same may be used to cut a shavingof greater or less thickness.

My invention consists of these separate features as arranged andconstructed, as well as the same combined.

In the accompanying drawings, Figure 1 shows a vertical sectionalviewoi' a central section of a plane without the extension sections. Fig.2illustrates the lsame section in a top view looking down upon 'theplane, with the handle removed. Fig. 3 represents a vertical sectionalview with the extension sections added; and Fig. 4, a top view of theplane with extensionscctions added.

`Like letters designatelike ,parte in all the igures.

The detachable handles of the plane are designated B H, the cutting bitor knife B,

and a hinged bank U, upon which the latter rests, and to which it isattached. The trunnions upon which the bank C is hinged tothe side wallsof the plane are shown at T; the cutting-edge of the bit at O theshaving-discharge opening of the plane at S.

The cutting bit or knife is illustrated as at tached to the hinged bankby means of a slotted opening in the knife, and a set-screw, as seen atI. Upon the under side ofthe hinged bank, and against it, so as to moveit and the attached bit or knife upon the hinged apex of the former,there is shown an eccentric, e, with a handle, E. 4This latter isattached to the base of the plane by a screw, K. The extension'sectionsEFE are attached to the central section F by means of lapping andtenoned joints, and are secured and held in place by the set-screws Si".S", passing through the lapping and tenoned points of union, andattaching the handles of the 4 plane.

The manner of operatingm the device thus formed is as follows: Ilhecutting knife or bit B, as attached to the bank U hinged at T, is shownas in contact, upon its inner edge, with thc eccentric e and its handleE, and when this handle is moved in the direction -of the arrows, shownupon the eccentric at c, the motion communicated to the bank in contactis such as to raise or depress the lower end of the'bank and knife bymoving the same in the direction of the arrows seen at c and a". Theshaving-cut will be in proportion -to the dip of the bit', and this isarrangedby the ad justable eccentric and handle, as it is moved aroundthe fixed pin, the eccentric raising or depressing the cutting end ofthe knife.

The knife or bit, which is sharpened at both ends, may, if desired, haveone end rounded, like the edge of a jack-plane knife, for coarse work,and the other with a straight cuttingedge, like a smoothing-plane, sothat the knife may be reversed and used for either kind of work, and, bythe addition of the extensionsection, what would servefor a jack-planebody may be changed into that of a jointer, and thus one tool may bemade to answer the purpose of several.

The body of the planes and the extensionsections may be made of eitherwood, iron, or other suitable material.

Having thus described my invention, what l claim, and desire to secureby Letters Patent, is-

1. [n combination, the center knife or bit section F of a plane, and theextension-section E l", to increase the length and base bearing-lines ofthe plane, as shown and described.

2. In a bench-plane, the hinged bank U, rcversible cutting bit or knifeB, actuating-eccentric e, and handle E, arranged to operate asdescribedv and show 3. [n a bcnch-plane, the extension-sections E andE", the center or bit section F; the hinged bank U, cutting bit .orknife B, thc adjusting-eccentric e, and handle E, arranged to operate asherein described and shown.

Signed at Troy, New York, this 12th day of December, 1876.

U. L. ADANCOURT.

Witnesses:

Unas. M. DAvis,

Tnos. F. MUnNANa.

UNITEb VSTATES PATENT GFFICE.

